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Amy has $510. Josephine has $160 less than Amy and $65 more than Ben. Ben used all of his money to buy some books for $9 each.
How much money does Josephine have?
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"Amy has $510. Josephine has $160 less than Amy" ====> Josephine has $510 - $160 = $350,
and with it the problem is just solved and the problem's question is just answered.
The info about Ben is UNNECESSARY, EXCESSIVE and is not used in the solution.
This info was placed to the problem with the only goal to confuse the reader.